Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > tmsms | Structured version Visualization version GIF version |
Description: The constructed metric space is a metric space given a metric. (Contributed by Mario Carneiro, 2-Sep-2015.) |
Ref | Expression |
---|---|
tmsbas.k | ⊢ 𝐾 = (toMetSp‘𝐷) |
Ref | Expression |
---|---|
tmsms | ⊢ (𝐷 ∈ (Met‘𝑋) → 𝐾 ∈ MetSp) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | metxmet 23395 | . . 3 ⊢ (𝐷 ∈ (Met‘𝑋) → 𝐷 ∈ (∞Met‘𝑋)) | |
2 | tmsbas.k | . . . 4 ⊢ 𝐾 = (toMetSp‘𝐷) | |
3 | 2 | tmsxms 23548 | . . 3 ⊢ (𝐷 ∈ (∞Met‘𝑋) → 𝐾 ∈ ∞MetSp) |
4 | 1, 3 | syl 17 | . 2 ⊢ (𝐷 ∈ (Met‘𝑋) → 𝐾 ∈ ∞MetSp) |
5 | 2 | tmsds 23546 | . . . . . 6 ⊢ (𝐷 ∈ (∞Met‘𝑋) → 𝐷 = (dist‘𝐾)) |
6 | 1, 5 | syl 17 | . . . . 5 ⊢ (𝐷 ∈ (Met‘𝑋) → 𝐷 = (dist‘𝐾)) |
7 | 2 | tmsbas 23545 | . . . . . . 7 ⊢ (𝐷 ∈ (∞Met‘𝑋) → 𝑋 = (Base‘𝐾)) |
8 | 1, 7 | syl 17 | . . . . . 6 ⊢ (𝐷 ∈ (Met‘𝑋) → 𝑋 = (Base‘𝐾)) |
9 | 8 | fveq2d 6760 | . . . . 5 ⊢ (𝐷 ∈ (Met‘𝑋) → (Met‘𝑋) = (Met‘(Base‘𝐾))) |
10 | 6, 9 | eleq12d 2833 | . . . 4 ⊢ (𝐷 ∈ (Met‘𝑋) → (𝐷 ∈ (Met‘𝑋) ↔ (dist‘𝐾) ∈ (Met‘(Base‘𝐾)))) |
11 | 10 | ibi 266 | . . 3 ⊢ (𝐷 ∈ (Met‘𝑋) → (dist‘𝐾) ∈ (Met‘(Base‘𝐾))) |
12 | ssid 3939 | . . 3 ⊢ (Base‘𝐾) ⊆ (Base‘𝐾) | |
13 | metres2 23424 | . . 3 ⊢ (((dist‘𝐾) ∈ (Met‘(Base‘𝐾)) ∧ (Base‘𝐾) ⊆ (Base‘𝐾)) → ((dist‘𝐾) ↾ ((Base‘𝐾) × (Base‘𝐾))) ∈ (Met‘(Base‘𝐾))) | |
14 | 11, 12, 13 | sylancl 585 | . 2 ⊢ (𝐷 ∈ (Met‘𝑋) → ((dist‘𝐾) ↾ ((Base‘𝐾) × (Base‘𝐾))) ∈ (Met‘(Base‘𝐾))) |
15 | eqid 2738 | . . 3 ⊢ (TopOpen‘𝐾) = (TopOpen‘𝐾) | |
16 | eqid 2738 | . . 3 ⊢ (Base‘𝐾) = (Base‘𝐾) | |
17 | eqid 2738 | . . 3 ⊢ ((dist‘𝐾) ↾ ((Base‘𝐾) × (Base‘𝐾))) = ((dist‘𝐾) ↾ ((Base‘𝐾) × (Base‘𝐾))) | |
18 | 15, 16, 17 | isms 23510 | . 2 ⊢ (𝐾 ∈ MetSp ↔ (𝐾 ∈ ∞MetSp ∧ ((dist‘𝐾) ↾ ((Base‘𝐾) × (Base‘𝐾))) ∈ (Met‘(Base‘𝐾)))) |
19 | 4, 14, 18 | sylanbrc 582 | 1 ⊢ (𝐷 ∈ (Met‘𝑋) → 𝐾 ∈ MetSp) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1539 ∈ wcel 2108 ⊆ wss 3883 × cxp 5578 ↾ cres 5582 ‘cfv 6418 Basecbs 16840 distcds 16897 TopOpenctopn 17049 ∞Metcxmet 20495 Metcmet 20496 ∞MetSpcxms 23378 MetSpcms 23379 toMetSpctms 23380 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-rep 5205 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 ax-cnex 10858 ax-resscn 10859 ax-1cn 10860 ax-icn 10861 ax-addcl 10862 ax-addrcl 10863 ax-mulcl 10864 ax-mulrcl 10865 ax-mulcom 10866 ax-addass 10867 ax-mulass 10868 ax-distr 10869 ax-i2m1 10870 ax-1ne0 10871 ax-1rid 10872 ax-rnegex 10873 ax-rrecex 10874 ax-cnre 10875 ax-pre-lttri 10876 ax-pre-lttrn 10877 ax-pre-ltadd 10878 ax-pre-mulgt0 10879 ax-pre-sup 10880 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-nel 3049 df-ral 3068 df-rex 3069 df-reu 3070 df-rmo 3071 df-rab 3072 df-v 3424 df-sbc 3712 df-csb 3829 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3902 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-tp 4563 df-op 4565 df-uni 4837 df-iun 4923 df-br 5071 df-opab 5133 df-mpt 5154 df-tr 5188 df-id 5480 df-eprel 5486 df-po 5494 df-so 5495 df-fr 5535 df-we 5537 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-pred 6191 df-ord 6254 df-on 6255 df-lim 6256 df-suc 6257 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-fv 6426 df-riota 7212 df-ov 7258 df-oprab 7259 df-mpo 7260 df-om 7688 df-1st 7804 df-2nd 7805 df-frecs 8068 df-wrecs 8099 df-recs 8173 df-rdg 8212 df-1o 8267 df-er 8456 df-map 8575 df-en 8692 df-dom 8693 df-sdom 8694 df-fin 8695 df-sup 9131 df-inf 9132 df-pnf 10942 df-mnf 10943 df-xr 10944 df-ltxr 10945 df-le 10946 df-sub 11137 df-neg 11138 df-div 11563 df-nn 11904 df-2 11966 df-3 11967 df-4 11968 df-5 11969 df-6 11970 df-7 11971 df-8 11972 df-9 11973 df-n0 12164 df-z 12250 df-dec 12367 df-uz 12512 df-q 12618 df-rp 12660 df-xneg 12777 df-xadd 12778 df-xmul 12779 df-fz 13169 df-struct 16776 df-sets 16793 df-slot 16811 df-ndx 16823 df-base 16841 df-tset 16907 df-ds 16910 df-rest 17050 df-topn 17051 df-topgen 17071 df-psmet 20502 df-xmet 20503 df-met 20504 df-bl 20505 df-mopn 20506 df-top 21951 df-topon 21968 df-topsp 21990 df-bases 22004 df-xms 23381 df-ms 23382 df-tms 23383 |
This theorem is referenced by: (None) |
Copyright terms: Public domain | W3C validator |